Sima Yi

Sima Yi (179-251) was a Wei vassal. He was promoted after Cao Cao recognized his talent and ability. In the battle with Shu, he refused to be lured out by Zhuge Liang, putting his heart and soul into a strong defensive effort, which resulted in victory. After serving four generations of the Cao family, he won a battle with Cao Shuang to seize control of the Wei Empire, laying the foundation for what would eventually become the Jin Dynasty.